v3.8

Performance Optimizations

Intel Architecture Processors

• Improved matmul and inner product primitives performance on processors with Intel AMX instruction set support.
• Improved performance of convolution and inner product primitives on processors with Intel AVX2 instruction set support.
• Improved performance of int8 convolution support with zero points.
• Improved fp32 convolution performance with fp16 and bf16 compressed weights on processors with Intel AVX2 or Intel AVX-512 instruction set support.
• Improved fp16/bf16 depthwise convolution performance with fp32 bias or sum post-ops or dilation.
• Improved bf16 pooling backpropagation performance.
• Improved binary post-ops performance with per_w broadcast.

Intel Graphics Products

• Improved performance on Intel Arc graphics for future Intel Core Ultra processors (code name Panther Lake).
• Improved convolution performance on:
  • Intel Arc Graphics for Intel Core Ultra processor series 2 (formerly Lunar Lake).
  • Intel Arc B-series discrete graphics (formerly Battlemage).
• Improved int8 matmul performance with zero-points support for source and weight tensors.
• Improved f4_e2m1 and f4_e3m0 matmul and reorder performance.
• Improved performance of the following subgraphs with Graph API:
  • Scaled Dot Product Attention (SDPA) with int4 and int8 compressed key and value.
  • fp16/bf16 SDPA with fp32 intermediate data types. Using fp32 intermediate data types is recommended.
  • SDPA with head size 512 and 576.
  • Grouped Query Attention (GQA) with 5D input tensors.

AArch64-based Processors

• Improved fp16 reorder performance.
• Improved int8 matmul performance.
• Improved bf16 inner product forward propagation performance with Arm Compute Library (ACL).
• Improved bf16 eltwise performance.
• Improved convolution performance on processors with SVE support with ACL.

Functionality

Common

• Extended Graph API Softmax operation to support inf_as_zero mode. This functionality enables SDPA subgraph compliant with Pytorch Safe Softmax semantics.

Intel Architecture Processors

• Introduced support for f32 convolution with fp16 compressed weights.
• Enabled int8/int4 compressed weights support in matmul primitive.

Intel Graphics Products

• Introduced select algorithm support in binary primitive.
• Introduced support for f4_e2m1 and f4_e3m0 data types in convolution primitive.
• Introduced support for the GenIndex operation in Graph API.

Generic GPU Vendor

• Introduced support for:
  • Vanilla RNN forward propagation.
  • Inner product backpropagation.
  • Group normalization.
• Improved accuracy of inner product primitive with sum post-ops for large shapes.

NVIDIA GPUs

• Introduced Graph API support.

Usability

• Added support for group normalization primitive with ONEDNN_ENABLE_PRIMITIVE build option.
• Enabled support for ROCm 6 on AMD GPUs.
• Improved CMake integration for oneDNN installation with Nvidia backend enabled.
• Reduced memory footprint for matmul primitive when using ACL.

Validation

• Added benchdnn option --execution-mode to test oneDNN functionality with SYCL Graph record/execute mode.
• Extended benchdnn option --cold-cache with support for cold TLB mode.
• Added benchdnn option --bia-dt to control bias data type for matmul, inner product, convolution, and deconvolution primitives.
• Extended syntax of benchdnn --dt option in Graph API driver to manage data types of individual tensors in a pattern.

Deprecated Functionality

• BLAS-like API including dnnl::sgemm, dnnl::gemm_u8s8s32, and dnnl::gemm_s8s8s32 functions is deprecated and will be removed in future releases. If you are using this API consider switching to matmul primitive.

Breaking Changes

• Removed the experimental Graph Compiler backend for Graph API.

Thanks to our Contributors

This release contains contributions from the project core team as well as Aditya Tewari @aditew01, Alexander Simonov @asimonov1, Denis @redradist, Dmitriy Ovchinnikov @inteldimitrius, Eliezer Weissmann @eliezerweissmann, Hubert Maciak @hmaciak, Ilya Lavrenov @ilya-lavrenov, James McGregor @Jmc18134, @jstachowintel, Marek Michalowski @michalowski-arm, Maria Zhukova @mzhukova, Orel Yehuda @yehudaorel, Ravi Pushkar @rpushkarr, Renato Barros Arantes @renato-arantes, @Shreyas-fuj, Shu Chen @shu1chen, Viktoriia Gvozdeva @vgvozdeva, Yair Obodovsky @yair-obodovsky, and @zhangfeiv0.